In 1507 Vasily III gave the order to construct an oak fortress in Tula on the left bank of the Upa River. In 1514 in an oak fortress, like in the Moscow Kremlin, Vasily III issued an order to construct the 'stone city', built in 1520-1521.
In 1552, was besieged by the Crimean khan Devlet I Giray. At that time, Tsar Ivan IV was with campaign against Kazan. Urban population fought before the arrival of reinforcements from the tsar's army from Kolomna. In memory of these events in the Tula Kremlin has been established the foundation stone near the Tower of Ivanovskie Gate.
In the second half of the 16th century, around the stone Kremlin was created Posad - a wooden fortress that more than ten times more the size of the stone Kremlin. This area at the time was the boundary of Tula.
In 1605 bell informed the residents about the arrival of the False Dmitry I and Tula for two weeks turned into pseudo capital of Moscow State. It was here in the Kremlin, came to swear allegiance to the pretender boyars and nobles.
In 1607, during the Peasants' War, the Tula Kremlin became the refuge for Ivan Bolotnikov. Together with people loyal to him, he kept the Kremlin by his control for four months. In 1608 in the Tula Kremlin by Tsar Vasily Shuisky were besieged the leaders of the peasant movement - Ivan Bolotnikov and Ileyko Muromets. Kremlin stand very long siege but was taken due creation a dam of the bags to the ground on Upa River. Water from the river flooded the Kremlin, and the rebels surrendered. In memory of these events in 1953 in the Tula Kremlin was erected an obelisk.
Today Tula Kremlin consists of walls and nine gates and towers.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.